def testBuffer(self):
apdu = APDU([0x00, 0x20, 0x01, 0x00, 0x04, 0x31, 0x32, 0x33, 0x34])
buffer = apdu.getBuffer()
self.assertEquals(0x00, buffer[ISO7816.OFFSET_CLA])
self.assertEquals(0x20, buffer[ISO7816.OFFSET_INS])
self.assertEquals(0x01, buffer[ISO7816.OFFSET_P1])
self.assertEquals(0x00, buffer[ISO7816.OFFSET_CLA])
buffer[0] = 1; buffer[1] = 2; buffer[2] = 3
buff = apdu.getBuffer()
self.assertEquals(1, buff[0])
self.assertEquals(2, buff[1])
self.assertEquals(3, buff[2])
def testAPDUDoc(self):
""" This is an adaptation of the piece of code on the APDU page """
apdu = APDU([0x00, 0x20, 0x01, 0x00, 0x04, 0x31, 0x32, 0x33, 0x34, 0x00])
buffer = apdu.getBuffer()
cla = buffer[ISO7816.OFFSET_CLA]
self.assertEquals(0, cla)
ins = buffer[ISO7816.OFFSET_INS]
self.assertEquals(0x20, ins)
# assume this command has incoming data
# Lc tells us the incoming apdu command length
bytesLeft = buffer[ISO7816.OFFSET_LC]
self.assertEquals(4, bytesLeft)
readCount = apdu.setIncomingAndReceive()
self.assertEquals(4, readCount)
while bytesLeft > 0:
# process bytes in buffer[5] to buffer[readCount+4];
bytesLeft -= readCount
readCount = apdu.receiveBytes ( ISO7816.OFFSET_CDATA )
# Note that for a short response as in the case illustrated here
# the three APDU method calls shown : setOutgoing(),setOutgoingLength() & sendBytes()
# could be replaced by one APDU method call : setOutgoingAndSend().
# construct the reply APDU
le = apdu.setOutgoing()
apdu.setOutgoingLength( 3 )
# build response data in apdu.buffer[ 0.. outCount-1 ];
buffer[0] = 1; buffer[1] = 2; buffer[3] = 3
apdu.sendBytes ( 0 , 3 )
self.assertEquals(APDU.STATE_FULL_OUTGOING,
apdu.getCurrentState())
